<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册</title>
</head>
<body>
<div>
    <h1>注册页面</h1>
    <input type="text" placeholder="用户名" v-model="username">
    <input type="text" placeholder="密码" v-model="password">
    <input type="text" placeholder="昵称" v-model="nickname">
    <input type="button" value="注册" @click="reg()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
 <script>
  let v = new Vue({
     el:"body>div",
     data:{
        username:"",
        password:"",
        nickname:""
     },
     methods:{
         reg(){
             axios.post("/reg",v.user).then(function (response) {
                 if(response.data==1){
                     alert("注册成功!")
                     location.href="/"
                 }else{
                     alert("用户名已存在!")
                 }

             })
         }

     }
   })
   </script>
</body>
</html>